what type of error?

take a look at this.

 

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I think it's pmd.

 

The face was just scratched off. PMD

 

I want better pictures. The faces looks like PMD but the legend looks kind of screwy.

 

picture

looks like 1 stroke did it, machined.

 

any comments?

 

My guess would be a coin counting machine. I see a lot of that type of machine damage on Kennedy's nose or the Eagle's beak (halves) and never did before the prominence of the coin counters. I think what happens is a coin gets "stuck" against a roller of some type and it can shear off an area.

 

that makes sense.

 

when letters are weak, is this a grease filled die, or worn die?

 

I think in this case it is just worn. However, usually graese filled dies will show no lettering at all. A weak strike, you would see the intended letters, just less bold.

 

ok, thanx